/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.fn.channel;



import com.bff.gaia.unified.vendor.grpc.v1p13p1.io.netty.channel.unix.DomainSocketAddress;

import com.bff.gaia.unified.vendor.guava.com.google.common.net.HostAndPort;



import java.io.File;

import java.io.IOException;

import java.net.InetSocketAddress;

import java.net.SocketAddress;



import static com.bff.gaia.unified.vendor.guava.com.google.common.base.Preconditions.checkArgument;



/** Creates a {@link SocketAddress} based upon a supplied string. */

public class SocketAddressFactory {

  private static final String UNIX_DOMAIN_SOCKET_PREFIX = "unix://";



  /** Parse a {@link SocketAddress} from the given string. */

  public static SocketAddress createFrom(String value) {

    if (value.startsWith(UNIX_DOMAIN_SOCKET_PREFIX)) {

      // Unix Domain Socket address.

      // Create the underlying file for the Unix Domain Socket.

      String filePath = value.substring(UNIX_DOMAIN_SOCKET_PREFIX.length());

      File file = new File(filePath);

      if (!file.isAbsolute()) {

        throw new IllegalArgumentException("File path must be absolute: " + filePath);

      }

      try {

        if (file.createNewFile()) {

          // If this application created the file, delete it when the application exits.

          file.deleteOnExit();

        }

      } catch (IOException ex) {

        throw new RuntimeException(ex);

      }

      // Create the SocketAddress referencing the file.

      return new DomainSocketAddress(file);

    } else {

      // Standard TCP/IP address.

      HostAndPort hostAndPort = HostAndPort.fromString(value);

      checkArgument(

          hostAndPort.hasPort(),

          "Address must be a unix:// path or be in the form host:port. Got: %s",

          value);

      return new InetSocketAddress(hostAndPort.getHost(), hostAndPort.getPort());

    }

  }

}